44 ALECTORIA. 



trate, robust, rigid, fragile, compressed-terete ; chestnut, and 

 blackening, and mostly shining; dichotomously much-branched, 

 the branches divergent and at length flexuous, and the tips 

 forked; " apothecia of middling size ; chestnut; the margin at 

 length crenulate-uueven. Spores ellipsoid, without colour, 



*J-*4 



mic." Nyl. Syn. I, p. 278 (char, fruct. excl.) & in Prodr. FL 



Nov. Gran. p. 14, not. Cornicularia, Ach. Syn. p. 300. 



On the earth in alpine, and arctic regions ; known fertile only 

 from Northeastern Asia (Nyl.), Arctic America (Richardson) 

 Hooker 1. c. 1823. Greenland, Vahl. Islands of Behring's 

 Straits, Wright. Kotzebue's Sound, Herb. Church. Babington. 



2. A. jubata (L.); thallus tufted, or pendulous, slender and 

 soon filiform, terete, smooth; blackish-brown, or now paler; 

 dichotomously very-much-branched; apothecia (small, and rare) 

 very entire. Spores rounded-ellipsoid, without colour, - 4 ^- mic. 

 Evernia, Fr. L. E. p. 20. 



a. bicolor, Fr. ; thallus erect, or prostrate, and now pendu- 

 lous, rather rigid, densely-branched, the branches divergent and 

 more or less fibrillose-ramulose j black below, and paler at the ends. 



b. chalybeiformis, Ach. ; thallus prostrate and sarmentose, or 

 now sub-pendulous, rather rigid, remotely divergent-branched, 

 flexuous ; brown ; the branches somewhat fibrillose-ramulose, of 

 one colour. 



c. implexa, Fr. ; thallus pendulous, elongated, softish, filiform 

 becoming capillary, very much branched and densely inter- 

 tangled ; brown, the branches of one colour. 



Throughout North America; at least in mountainous regions. 



a, on the earth in alpine districts; and, more developed, 



becoming pendulous, and fertile, on firs in the higher forest of the 

 White Mountains, Tuckerman Lich. N. E. 1841 ; Lich. Exs. n. 2. 

 Greenland, J. Vahl. &, on the earth in alpine districts ; Green- 

 land, J. Vahl ; and White Mountains, fertile, Lesquereux ; as 

 also on branches of firs in cold swamps, where equally fertile; 

 and very common in a sterile state, on dead wood, throughout 

 the Northern States, and along the mountains southward and 

 westward, Muhlenberg Catal 1818 (this low-country lichen being 

 ill- distinguishable from Alectoria nidulifcra, Norrl. Lich. Fenn. 



n. 15). c, on trees, Northern States and Canada, fertile on 



mountains, Michaux (Setaria trichodes), Flora Bor. Amer. 1803. 

 Rocky- Mountains, Hall. Arctic America, Richardson. 



